GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 180)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
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52
detect a speed feedback loss alarm.
When an alarm is detect, the keypad will shown „Speed fbk loss“. Encoder 1 state
provides the indication of encoder 1 connection status. The parameter can be programmed
on a digital output. This function is activate setting Enable fbk contr = Enabled.
Refresh enc 2 Enable the monitoring of the encoder 2 (connector XE2) connection status, in order to
detect a speed feedback loss alarm.
When an alarm is detect, the keypad will shown „Speed fbk loss“. Encoder 2 state
provides the indication of encoder 2 connection status. The parameter can be programmed
on a digital output. This function is activate setting Enable fbk contr = Enabled.
Encoder 1 state Provides the indication of the encoder 1 (connector XE1) connection status. The pa-
rameter can be programmed on a digital output.
Encoder 2 state Provides the indication of the encoder 2 (connector XE2) connection status. The pa-
rameter can be programmed on a digital output.
n
ote
! The Tacho scale and Speed offset parameters are used for a fine scaling of the speed feedback
circuit. When the factory set parameters are loaded (Load default) these two parameters do
not undergo any change, so that a new scaling is not necessary!
Following parameters allows to determine the machine absolute zero and perform a positioning control:
Enable ind store This parameter enables the reading of the encoder index and qualifying signal that could
be used in a system for implementation of position control.
Enabled This setting enables the reading of the encoder index.
Disabled This setting disables the reading of the encoder index
Ind store ctrl Control register for the encoder index and qualifying signal (*).
Index storing Status register and function data.
(*) Index qualifier signal is not supported by regulation card R-TPD3-2G revision f (product configuration
“D1”) and lower
Ind store ctrl parameter [92]
No. bit Name Description Access
(Read/Write)
Default
0-1 - Not used - -
2 POLNLT It indicates the encoder index edge polarity:
0 = rising edge
1 = falling edgec
R/W 0
3 - Not used - -
4-5 ENNQUAL It indicates the qualifier level that activates the encoder index reading:
0 = Switched off
1 = Switched off
2 = Through signal = 0
3 = Through signal = 1
W 0
6 Target Enc
Num
It points out for which encoder the values of this parameter are reported:
0 = operations requested on the Encoder 1
1 = operations requested on the Encoder 2
R/W 0
7 - Not used - -
8-9 ENNLT Control function of the encoder index reading:
0 = Switched off, function disabled
1 = Once, enables the reading of the first index signal edge only
2 = Continuous, enables the reading of the index signal
R/W
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